1. High speed brushless motor, with faster and stronger wind speed. 2. 30 layer LCP material fan blades, strong wind gathering, greater airflow. 2. 360 degree adjustable air duct with a wide blowing range. 3. The metal neck band provides a refreshing and icy feeling. 4. 38dB ultra quiet, available anytime, anywhere. 5. Five levels of wind speed are adjustable to meet different needs. 6. Parameters: Material: ABS+stainless steel+aluminum sheet Rated power: 3.2W Interface: Type-C Size: 218x146x66.5mm